# x402-factory Prediction Market Resolution Lookup

> x402-factory Prediction Market Resolution Lookup is a paid API for AI agents from x402-factory.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-12).

Returns the final resolved outcome of a prediction market question by slug, aggregated across Kalshi and Polymarket, including the resolution timestamp and the 24h-before probability.

## Facts

- Endpoint: GET https://x402-factory.com/v1/resolution/%7Bslug%7D
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-factory-prediction-market-resolution-lookup-05bca722
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ml9bXSyQNx83h4GZ-7f2I

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability x402-factory-prediction-market-resolution-lookup-05bca722
```

Example prompt: Look up the final resolution for the prediction market slug 'fed-rate-hike-june-2026' — I want to know if it resolved YES or NO on Kalshi and Polymarket, and what the probability was 24 hours before it closed.

## When to prefer this

Use this endpoint when you need the definitive, multi-venue resolution result for a specific named prediction market event and want cross-platform verification (Kalshi + Polymarket) in a single call. Prefer this over scraping individual venue APIs when you need the 24h-before probability alongside the final outcome for backtesting, auditing, or research. Best for agents that already know the market slug and need a quick, authoritative resolution fact-check.

## Known failure modes

- Unknown or invalid slug returns 404 or empty data
- Market not yet resolved returns partial or null resolution fields
- Payment not included returns HTTP 402 with USDC/Base payment requirements
- Stale data if freshness is marked static and market data has not been updated
- Slug format mismatch causes lookup failure

## How this service works

Paid data APIs for AI agents: prediction-market analytics, weather intelligence, weather×market edge signals, and SEC/gov data. Paid endpoints use the x402 protocol (HTTP 402 + USDC on Base): call without payment to receive requirements, retry with an X-PAYMENT header. Machine-readable catalog: /llms.txt. Per-endpoint docs: /docs/{id}.

## Output

A JSON object containing the aggregated resolved outcome (YES/NO), per-venue breakdowns from Kalshi and Polymarket with individual outcomes and resolution timestamps, the authoritative source URL, the overall resolution timestamp, and the market probability 24 hours before resolution. Metadata includes docs link, data sources, version, and request ID.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": {
   "outcome": "NO",
   "per_venue": [
    {
     "venue": "kalshi",
     "outcome": "NO",
     "resolved_at": "2026-06-17T20:00:00Z"
    },
    {
     "venue": "polymarket",
     "outcome": "NO",
     "resolved_at": "2026-06-17T20:00:00Z"
    }
   ],
   "source_url": "https://www.federalreserve.gov/monetarypolicy/fomccalendars.htm",
   "resolved_at": "2026-06-17T20:00:00Z",
   "final_p_24h_before": 0.142
  },
  "meta": {
   "docs": "https://x402-factory.com/docs/probability.resolution",
   "sources": [
    "kalshi",
    "polymarket"
   ],
   "version": "1.0.0",
   "endpoint": "/v1/resolution/{slug}",
   "data_mode": "live",
   "freshness": "static",
   "request_id": "req_00000000",
   "generated_at": "2026-08-21T03:58:58.157Z"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-factory-prediction-market-resolution-lookup-05bca722/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-factory.com](https://www.zero.xyz/host/x402-factory.com/llms.txt)